Cole Hersee Master Disconnect Switch Protect against electrical fires, tampering, theft, etc. Units available with noncorrosive brass case, plated to resist corrosion. Heavy duty design. Solid brass or copper stud terminals. For use with alternator or generator. SPST Two Positions: Off-On (6-36 VDC) Disconnects battery circuit only, does not disconnect alternator or generator field circuit. UL listed 707B. Silver contacts. Brass case. Chrome plated die cast lever. Two 3/8" diameter stud terminals. Brass mounting stem 3/4" diameter, 1-13/32" long. Fits panels up through 15/16" thick. Continuous rating 175 Amps, intermittent rating 800 amps 15 seconds on, 5 minutes off. Ignition protected.